The VariationMinimum response group provides the child ASINs for each parent ASIN in the response. For example, if the response contains "Brand X T-Shirt" as a parent ASIN, this response group will return the ASIN for each child ASIN of "Brand X T-Shirt," including "Small, Blue, Brand X T-Shirt", "Medium, Blue, Brand X T-Shirt", "Large, Blue, Brand X T-Shirt", "Small, Red, Brand X T-Shirt", etc.
Sample Response (REST)
<?xml version="1.0" encoding="UTF-8"?>
<ItemLookupResponse xmlns="http://webservices.amazon.com/AWSECommerceService/2004-08-01">
<OperationRequest>
<HTTPHeaders>
<Header Name="UserAgent" Value="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"/>
</HTTPHeaders>
<RequestId>11Y0BJVFR7F1TDNP3ZNE</RequestId>
<Arguments>
<Argument Name="MerchantId" Value="All"/>
<Argument Name="Service" Value="AWSECommerceService"/>
<Argument Name="AssociateTag" Value="[Your Associate ID Here]"/>
<Argument Name="SubscriptionId" Value="[Your Subscription ID Here]"/>
<Argument Name="ItemId" Value="B00006XYAB"/>
<Argument Name="ResponseGroup" Value="VariationMinimum"/>
<Argument Name="Operation" Value="ItemLookup"/>
</Arguments>
</OperationRequest>
<Items>
<Request>
<IsValid>True</IsValid>
</Request>
<Item>
<ASIN>B00006XYAB</ASIN>
<Variations>
<Item>
<ASIN>B0000B1P5Z</ASIN>
</Item>
<Item>
<ASIN>B0000B1P62</ASIN>
</Item>
<Item>
<ASIN>B0000B1P63</ASIN>
</Item>
<Item>
<ASIN>B0000B1P65</ASIN>
</Item>
<Item>
<ASIN>B0000B1P67</ASIN>
</Item>
<Item>
<ASIN>B0000B1P69</ASIN>
</Item>
<Item>
<ASIN>B0000B1P6M</ASIN>
</Item>
<Item>
<ASIN>B0000B1P6O</ASIN>
</Item>
<Item>
<ASIN>B0000B1P6Q</ASIN>
</Item>
<Item>
<ASIN>B0000B1P6T</ASIN>
</Item>
</Variations>
</Item>
</Items>
</ItemLookupResponse>
The Request that Generated the Response (REST)
http://webservices.amazon.com/onca/xml?Service=AWSECommerceService
&SubscriptionId=[Your Subscription ID Here]
&AssociateTag=[Your Associate ID Here]
&Operation=ItemLookup
&ItemId=B00006XYAB
&MerchantId=All
&ResponseGroup=VariationMinimum